10 Sep
2003
10 Sep
'03
8:54 p.m.
I have now finished my annual stocktaking, and the following obsolete/surplus items have
popped up. It would be appreciated if they could be used in restoration projects, as long
as my P&P is covered.
Postage from Denmark depends on weight and/or size, so please ask first.
A very short description is included, but you can mail me directly at nico(a)farumdata.dk
for more info
(1) Qualstar 1052 R/W formatter.
1 new, 1 slightly used
(2) SMS SCSI controllers. 5x SMS-512, 8x SMS-7250.
The 512 is an 8-bit ISA controller, talking to the 7250 which can address 4x floppy disc
and 7 50-pin SCSI devices.
(3) Digital 8-bit net adapter, FCC-id AO9-DE100
(4) 2x IBM adapters as described in an earlier message.
9-pin output, probably network adapters. Marked 16/4 on a green sticker with white
border.
(5) 1x MFM disccontroller, 2x HD
Nico
11 Sep
11 Sep
12:55 a.m.
New subject: Sudden death in the family :(
Hi all,
Today is a sad day. For obvious reasons, it already was (no, let us NOT
start that topic [again] .. tis a sad day, period), but now it's even
more so.
I just powered up a friend's PDP-11/53, which had been sitting in my
living room for, er, quite a while, and... nada. Fans dont start up,
not the usual racket when one powers up a BA23. The light in the power
switch turns on, though. I can hear a very soft "tick-tick, tick-tick"
sound in the power supply, and I do see how the fans get started, but
very quickly die down. Likewise, I see several LED's very briefly
turn on, and then die off again.
So.. looks like the power supply died on me, just while sitting there.
Is this a "known symptom" with the BA23 power supplies? It's a newer
one, with the colored wires.
If anyone near me has a spare BA23 they'd be willing to part from, or
at least the power supply, that would be heaven... my friend's gonna
have my liver for lunch for nuking his system....
Cheers, sortof,
Fred
--
Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist
Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/
Visit the Archives at http://www.pdp11.nl/
Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA
3:30 a.m.
New subject: Sudden death in the family :(
On 2003.09.11 14:45 Fred N. van Kempen wrote:
Is this a "known symptom" with the BA23
power supplies? It's a newer
one, with the colored wires.
I had this sudden PSU death with a BA23 and a SGI
Personal Iris 4D35. I
heard that electrolytic capacitors can cause this but I have no detailed
knowledge about this. :-(
Remove everything from the machine that is not essential for basic
operation. Keep only CPU, RAM, SLU. No drives etc. and retry. Try with
different boards if it does not work. I had the same with my PDP-11/73
in a BA23 and it was a dead TK50 that caused a short. Have a look at the
power wires / plugs at the PSU. Sometimes they get corroded.
Have a look at the cards. Are there any wires from the components bent
and shortened? A friend had a "dead" PDP-11/53 CPU that had some strange
bus errors. (A bit was allways "1".) On carefull inspection of the PCB
we found a wire from a resistor that was bent and connected to a pin
from a bus driver IC...
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
10:06 a.m.
New subject: Sudden death in the family :(
I just powered up a friend's PDP-11/53, which had
been sitting in my
living room for, er, quite a while, and... nada. Fans dont start up,
not the usual racket when one powers up a BA23. The light in the power
switch turns on, though. I can hear a very soft "tick-tick, tick-tick"
sound in the power supply, and I do see how the fans get started, but
very quickly die down. Likewise, I see several LED's very briefly
turn on, and then die off again.
THis is the classic sound of a SMPSU that's detecting a problem and then
shutting down to protect itself and/or the load.
The fault may not be in the PSU -- it could be a short on one of the
outputs -- say a shorted decoupling capactior on one of the boards or
something. I think I'd start by putting the supply on a dummy load (at
least on the +5V and +12V rails), with all the logic boards pulled. See
if the supply works OK on its own. If not, then you need to troubleshoot
the supply (it's probably a defective capacitor!). If the supply works on
dummy load, then put (say) the CPU and memory boards back and see what
happens. Add boards one at a time until the PSU shuts down, then find the
short on the last board you added.
-tony
11:11 a.m.
New subject: New "vintage computers" forum
A new forum page, based on phpBB2 has been set up with (moderated) forums
devoted to "classic vintage computers",
check them out at http://commodore.thebbs.org/phpBB2/index.php
Although I've only just set this up, I plan on developing this & expanding
it. Mostly in testing at the moment, appreciate it if people would drop by &
leave me some feeback (ie improvements etc).
cheers & thanks,
Lance
2:10 p.m.
New subject: Cable wanted...
I'm in need of a C-64 video cable - it's got a 5 pin din on one end, and 3
RCA plugs on the other (luma, chroma and sound). Anyone here have one
they'd like to part with?
Tnx!
g.
4:12 p.m.
New subject: Apple II SCSI card upgrade?
I picked up an Apple II SCSI card which the box said Rev C. Looking
the card over it looks to me like it's a Rev A board. Anyone know where
I can get the Rev C rom so I can use it?
Thanks.
-----
"If you want to see it, see into it directly;
but when you stop to think about it, it is
altogether missed."
"When the mind is free of any thought or judgement,
then and only then can we know things as they are."
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
4:53 p.m.
New subject: Apple II SCSI card upgrade?
----- Original Message -----
From: "David Williams" <dlw(a)trailingedge.com>
To: <cctalk(a)classiccmp.org>
Sent: Friday, September 12, 2003 12:04 AM
Subject: Apple II SCSI card upgrade?
I picked up an Apple II SCSI card which the box said
Rev C. Looking
the card over it looks to me like it's a Rev A board. Anyone know where
I can get the Rev C rom so I can use it?
Thanks.
-----
"If you want to see it, see into it directly;
but when you stop to think about it, it is
altogether missed."
"When the mind is free of any thought or judgement,
then and only then can we know things as they are."
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
Whats the rom chip say on it (this assumes its just the standard scsi card
and not the high speed card with dma)?
341-0112A is revision A
341-0112B is revision B
341-0437-A is revision C
This should clear up what you have.
6:07 p.m.
New subject: Apple II SCSI card upgrade?
Oh I've already determined it is the Rev A. Found the FAQ and my chip
has a 341-0112A sticker on it. The box it came in says Rev B but I'll
trust the chip over the box. I read that to use the current Apple software
I need a Rev C so since I really want to use this in my IIgs I'm looking
for a way to upgrade it.
On 12 Sep 2003 at 0:45, TeoZ wrote:
Whats the rom chip say on it (this assumes its just
the standard scsi card
and not the high speed card with dma)?
341-0112A is revision A
341-0112B is revision B
341-0437-A is revision C
This should clear up what you have.
-----
"If you want to see it, see into it directly;
but when you stop to think about it, it is
altogether missed."
"When the mind is free of any thought or judgement,
then and only then can we know things as they are."
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
12 Sep
12 Sep
1:48 a.m.
New subject: Apple II SCSI card upgrade?
You need to get the rom burned if you have a programmer or have somebody do
it.
I have the rom file available but didnt have the burner so I asked around
and a kind person made me a copy (awaiting delivery).
If you need the rom file
http://homepage.mac.com/WebObjects/FileSharing.woa/2/wo/RyPj4BJm3ZljFod0.1/…
get it there (scsi_rev_c.bin.zip).
----- Original Message -----
From: "David Williams" <dlw(a)trailingedge.com>
To: <cctalk(a)classiccmp.org>
Sent: Friday, September 12, 2003 2:00 AM
Subject: Re: Apple II SCSI card upgrade?
Oh I've already determined it is the Rev A. Found
the FAQ and my chip
has a 341-0112A sticker on it. The box it came in says Rev B but I'll
trust the chip over the box. I read that to use the current Apple
software
I need a Rev C so since I really want to use this in
my IIgs I'm looking
for a way to upgrade it.
On 12 Sep 2003 at 0:45, TeoZ wrote:
> Whats the rom chip say on it (this assumes its just the standard scsi
card
and not the
high speed card with dma)?
341-0112A is revision A
341-0112B is revision B
341-0437-A is revision C
This should clear up what you have.
-----
"If you want to see it, see into it directly;
but when you stop to think about it, it is
altogether missed."
"When the mind is free of any thought or judgement,
then and only then can we know things as they are."
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
4:21 p.m.
New subject: Apple II SCSI card upgrade?
Thanks. Now is there someone out there that can help me burn a rom?
Don't have a burner here.
On 12 Sep 2003 at 9:39, TeoZ wrote:
You need to get the rom burned if you have a
programmer or have somebody do
it.
I have the rom file available but didnt have the burner so I asked around
and a kind person made me a copy (awaiting delivery).
If you need the rom file
http://homepage.mac.com/WebObjects/FileSharing.woa/2/wo/RyPj4BJm3ZljFod0.1/…
get it there (scsi_rev_c.bin.zip).
-----
"If you want to see it, see into it directly;
but when you stop to think about it, it is
altogether missed."
"When the mind is free of any thought or judgement,
then and only then can we know things as they are."
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
11 Sep
11 Sep
8:31 p.m.
New subject: Cable wanted...
----- Original Message -----
From: "Gene Buckle" <geneb(a)deltasoft.com>
To: <cctalk(a)classiccmp.org>
Sent: Friday, September 12, 2003 12:13 PM
Subject: Cable wanted...
I'm in need of a C-64 video cable - it's got a
5 pin din on one end, and 3
RCA plugs on the other (luma, chroma and sound). Anyone here have one
they'd like to part with?
Sure - I'm in Oz though, but I do have spares.
// http://commodore.thebbs.org
telnet://commodore.thebbs.org
Classic computer discussion forums :
http://commodore.thebbs.org/phpbb2/index.php
Since 1987 - Australia's oldest Amiga BBS //
12 Sep
12 Sep
2:02 a.m.
New subject: Cable wanted...
I'm in
need of a C-64 video cable - it's got a 5 pin din on one end, and 3
RCA plugs on the other (luma, chroma and sound). Anyone here have one
they'd like to part with?
Sure - I'm in Oz though, but I do have spares.
11 Sep
11 Sep
10:20 p.m.
New subject: New "vintage computers" forum
--- Lance Lyon <llyon(a)commodore.thebbs.org> wrote:
A new forum page, based on phpBB2 has been set up with
(moderated) forums
devoted to "classic vintage computers"
Mostly in testing at the moment, appreciate it if people would drop by &
leave me some feeback (ie improvements etc).
You're going to hate me for this... but... why? There are already usenet groups
for different machines which work perfectly well. There's classiccmp as a
central resource for questions. Doesn't another forum just dilute things even
further? I certainly don't have time to read classiccmp, newsgroups, and
several web forums as I doubt do many others.
If you must run a forum too, I suggest you make sure that posts to your forums
are mirrored on the classicmp list and vice-versa automatically - for the good
of the hobby and all that. Although given the way the web forum is split up
into different sections I'm not sure how you'd do that without user
intervention :-(
My 2 cents worth anyway...
(Yes, I am having a bad day :-)
cheers
Jules
=====
Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell
ring.
________________________________________________________________________
Want to chat instantly with your online friends? Get the FREE Yahoo!
Messenger http://mail.messenger.yahoo.co.uk
12 Sep
12 Sep
12:11 a.m.
New subject: New "vintage computers" forum
Hi Jules,
You're going to hate me for this... but... why?
There are already usenet
groups
for different machines which work perfectly well.
There's classiccmp as a
central resource for questions. Doesn't another forum just dilute things
even
further? I certainly don't have time to read
classiccmp, newsgroups, and
several web forums as I doubt do many others.
True there are NG's & lists like these, but NG's are mostly unmoderated &
oft times conversations degenerate into flame wars & name calling.
The problem with a general-purpose list (like classiccmp) is that sometimes
you have to wade thru a lot of posts to find something you're interested in.
For example, there's a lot of discussion on PDP's on this list, a machine
that I have no interest in, and I spend quite some time culling these posts
out to find the ones I'm interested in (for the record: CP/M, obscure
operating systems, CBM PETs & MSX machines). The gems do turn up from time
to time in amongst all the other stuff :-)
If you must run a forum too, I suggest you make sure that posts to your
forums
are mirrored on the classicmp list and vice-versa
automatically - for the
good
of the hobby and all that. Although given the way the
web forum is split
up
into different sections I'm not sure how you'd
do that without user
intervention :-(
Not a good idea - think of the moderation problems :-)
cheers,
Lance
// http://commodore.thebbs.org
telnet://commodore.thebbs.org
Classic computer discussion forums :
http://commodore.thebbs.org/phpbb2/index.php
Since 1987 - Australia's oldest Amiga BBS //
3:49 a.m.
New subject: New "vintage computers" forum
Doesn't another forum just dilute things even
further?
I certainly don't have time to read classiccmp, newsgroups, and...
I don't believe it is physically possible to dilute information
further than it is diluted here. Joking, but only in part unfortunately.
If someone wants to suffer through moderating his own forum, then
more power to him. The ''free market economy'' will decide who wins.
John A.
11 Sep
11 Sep
11:35 a.m.
New subject: Sudden death in the family :(
At 02:45 PM 9/11/03 +0200, you wrote:
Hi all,
Today is a sad day. For obvious reasons, it already was (no, let us NOT
start that topic [again] .. tis a sad day, period), but now it's even
more so.
Fred where are you located, I may have a powersupply from a BA23 that
housed a MicrovaxII (Least I think it was a BA23) ....
12 Sep
12 Sep
4:04 a.m.
New subject: Sudden death in the family :(
Fred N. van Kempen schrieb:
Hi all,
Today is a sad day. For obvious reasons, it already was (no, let us NOT
start that topic [again] .. tis a sad day, period), but now it's even
more so.
Sorry about that.
I just powered up a friend's PDP-11/53, which had been sitting in my
living room for, er, quite a while, and... nada. Fans dont start up,
not the usual racket when one powers up a BA23. The light in the power
switch turns on, though. I can hear a very soft "tick-tick, tick-tick"
sound in the power supply,
This sound is very familiar for me at least after last week my ethernet
switch, my ADSL modem and my private branch exchange died of overvoltage.
All three had one defect capacitor in the psu and all three capacitors
made different variants of very soft "tick, tick, tick-tick-tick, ..."
So I would look for a defect capacitor in the power supply.
and I do see how the fans get started, but
very quickly die down. Likewise, I see several
LED's very briefly
turn on, and then die off again.
Hope this helps
--
Gerold Pauler pxgNoxyz(a)pdp8.de
remove Noxyz to answer or look at
http://pdp8.de
7724
days inactive
7725
days old
17 comments
12 participants
participants (12)
-
allain＠panix.com -
ard＠p850ug1.demon.co.uk -
dlw＠trailingedge.com -
gando＠t-online.de -
geneb＠deltasoft.com -
geoffr＠zipcon.net -
jkunz＠unixag-kl.fh-kl.de -
julesrichardsonuk＠yahoo.co.uk -
llyon＠commodore.thebbs.org -
nico＠farumdata.dk -
teoz＠neo.rr.com -
waltje＠pdp11.nl